Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionBLB&B Advisors, LLC
Latest Disclosed Ownership131,090 shares
Latest Disclosed Value $ 16,095,273
BLB&B Advisors, LLC reports 9.24% decrease in ownership of ANET / Arista Networks, Inc.

On April 28, 2026 - BLB&B Advisors, LLC filed a 13F-HR form disclosing ownership of 131,090 shares of Arista Networks, Inc. (MX:ANET) valued at $16,095,273 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 144,440 shares of Arista Networks, Inc.. This represents a change in shares of -9.24% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-28 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 131,090 -13,350 -9.24 16,095 -14.95 0.5636
2026-01-26 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 144,440 -2,351 -1.60 18,926 -11.52 0.7912
2025-10-31 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 146,791 -860 -0.58 21,389 41.59 0.9233
2025-08-04 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 147,651 4,029 2.81 15,106 35.76 0.7058
2025-04-28 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 143,622 -5,320 -3.57 11,128 -32.41 0.5663
2025-01-28 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 148,942 110,667 289.14 16,463 12.06 0.8398
2024-10-22 2024-09-30 13F ARISTA NETWORKS COM 040413106 38,275 356 0.94 14,691 10.54 0.7505
2024-07-26 2024-06-30 13F ARISTA NETWORKS COM 040413106 37,919 3,233 9.32 13,290 32.12 0.7281
2024-04-26 2024-03-31 13F ARISTA NETWORKS COM 040413106 34,686 5,312 18.08 10,058 45.41 0.5672
2024-01-19 2023-12-31 13F ARISTA NETWORKS COM 040413106 29,374 29,374 6,918 0.4363
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.